2101031402 has 4 divisors (see below), whose sum is σ = 3151547106. Its totient is φ = 1050515700.

The previous prime is 2101031399. The next prime is 2101031407. The reversal of 2101031402 is 2041301012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1561909441 + 539121961 = 39521^2 + 23219^2 .

It is not an unprimeable number, because it can be changed into a prime (2101031407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525257849 + ... + 525257852.

Almost surely, 2^2101031402 is an apocalyptic number.

2101031402 is a deficient number, since it is larger than the sum of its proper divisors (1050515704).

2101031402 is a wasteful number, since it uses less digits than its factorization.

2101031402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050515703.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2101031402 is about 45837.0090865449. The cubic root of 2101031402 is about 1280.7887801840.

Adding to 2101031402 its reverse (2041301012), we get a palindrome (4142332414).

The spelling of 2101031402 in words is "two billion, one hundred one million, thirty-one thousand, four hundred two".